Boiler.



'E. C. MEIER.

BOILER.

APPLICATION men was. 1916.

1 239,026. Patented Sept. 4, 1917 2 SHEETS-SHEET I.

E. C MEIER.

BOILER.

APPLICATION FILED AUG.5.1915.

Patented Sept. 4, 1917.

2 smnvsuzn 2.

UNITED enzyme PATENT OFFICE.

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a I q pom 1 a v "amwv I l 1e239,026 w m flo 0115mm R m! Patented shape. 4, 191m mpgmwmn hM-n m 5, p18. aerial m. 11 wire.

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citizen er the Unified Bhke residing at P-heenixvim in the eomity e (msm we a 8mm ef Pennsylvam; have invented we win new and mum! Implements ih Beak ere, at which the fellawin firs u epelflentm. My invemien consists imprevemenfrs in beilei-ii One obfeet e! my invenewn is h) so malte the ham! ladies in boiler sheets and pmvi'ae than with hand h'ole filfiies that the hand hole plumes my be quie ly and easily inserted or renewed and wit! be ektf'emely durable and eflieimt in sewiee.

Amber eegeec at my inventim is: to make the em; holes in water We? whee b mm ilng amem sized meme 11g hbl'es mm me mm mm eheee and to makeithehm we game so than; cafi be moved thr agh the hole and then positioned so as to enfit'elj wm the hfile an the'iueide ef the Witter A stifi term ebiece 1 s to make the mm mm; p of weeugee steel arid with en inbegml threaded stem whi'h a fitit may be turned. e

A still: maker ml: at my inventim is to previae'in eembimeiaa with the g: 150% demand; a hanging pme e! m ent w mgnge the cum mime 6f the Bofler we, we slumping re leavin an em sethule wmeh'myee aveemeuuwme a1 me mmgm mm e f we mm hate game muse having a reeese whififig after the plate has eased over use net; m be M meme; ehirle'sfiitii infiegm m thus nvfi requiring the ems-ire 16mm; M -'s "Hill; in em to name the 1mm me pxusetrom ite poaitimi withinthe belle! 85.55%.

Another obi-wt at my-iuveatieme in 9b m wme hm ladle plebtfihfl ns memsf will fit the enema e mm by the drilling dime 15mm and their an m m flange "willbe pmiqed enema me, said image beiligoi' when we flap um hmerimhepmmm a mteirfi eg mnshnd Beak film Q w" l ends whienmu w m, t uetmiuwiti the E1161, tefetehce beihihafl m the accompanying drawings in whic Figtml iea 015mm wit a mwmmglma m boihvphw or wata'z- 1: on 11101931111 mad-11mg! Mmrlngm mam? 'whieh 5 with egksmrubed in aaerdame with my invent Fig. *2 is a view at similar 11mm to Fig. 1' "the posmbfi assumed by the man-pie me when the tamer is either be en a in ed er rembvea. l 8 ie a m mm emvetien eat a bail, ehwm the he e dfifle'd theieih. Fig. 4 is a''ctlfihal view taken an the hue aa n! Fig. 1.

Fig. 5 is a eecieml view taken eh the line bb of Fig. 2", m5 7 Fig; 6 is a view bf similar nature t'p Fi 1 sawing the emmpihg me provided m a hexa onal hole to fit over a hexagtifial mat in d mm m the em hole anfl sqi-mre new; shown in 4 and a.

Referrifig we ea hereby pmuees hand we 2 "n fleh ee manner we the huge 'pmien (If me oh: as we we ms immetig themwith, at wsitiensmesemtieuy die rieally epfm ite eaeh when 7 and e.

It will be mixed thkflle defied ei-hen ef as the he! 8 represent ehe' jpertiams Which are cut away when the large hel 5 1S milled. Au fiflie mes are new meme! 0 as m prbaaee amen ge surface.

The mm! h e elm 9 is iovi'difl with 1 an pee'ci en 19 we eh fice with time pmfiibn e efthe hand we 2, and is me revided with e we meese 2 1M m rear pert m if the law 9 is pravaie wim meme (1 flange 2 wmh vs entirely covers the hand hole 2, e216 v wake of axis as pflrtteh is sueh are to fie mew/1mg m t; I file; pdflzifln ef the hand time a which inemdes the we recesses; '7 ma 5mm fitir tifif i lieiflg the wdeei port-Ian 0f mo the-hale m meagre! stem 15 ms eucwardiy mm m mi, w, an is wwwtmacbd an? A new 9 meme en the Sarawsmudge are my e: the were 18; m1 thf's time we re prefer 1y matte mm uieaea or rem elite! [1! EM! ends: a8 SHOW a1 16.

Ammpiag pm 1% isepreterably made eenv'exefl its bfitet em iaee ahfieflflcawe 6Y1 This elamprrrg piute is He its inner surface.

rovi d niofl'iset liqle" V i av' g iilurali iif iirtis, he adfiac'erit" 1d s that secting each other at angles to correspond with the shape of theengular contour of the nut 15. The plate 17 is also provided with a circular recess 19 which intersects the 0H- set hole 18. The intersecting sides of the Hole" 18 I-witlrthe =recess'l9 extend at a slant or in other words intersect, the recess 19 ,at an angle greater than ninety degrees so that after the p atel'l hasibeenslid overthe ou 15, the stem 13 may he moved into enga. ement, withthe sidesof the hole 18 and gui ed directly into the recess 19, said position bei ng shonfln in Figs. 1 and 4 oftlie drawing. When in this position, the outer edge ofthe clamping plate engages the portion of the sheet 1 which is immediately adjacent said hand hole 2, and when the nut 15 is tightened, the plate 17 acts as resisting means to consequently draw the hand hole plate into its closed position, it being noted that a gasket 20 is interposed between the flanged portion-12 of the plate 9 so as to form a tight seal.

By haying the nut 15 recessed and the outer surface of the plate 15 convex, a por- ,tion, of theconvexsurfaee will project, within themecess of the nutadjaeent it and therebyjorm a snug sliding fitbetween the nut arid the said convex surfaceof the clamp ing plate so that there isno shearing action betweenthe nut and the clamping plate.

, When it is desired to remove the hand hole plate, i islm erely necessaryto slightly turn the nut 15, so that the clamping plate may he slid into the position shown in Figs. 2 and 5 after which the, plate may be removed over the nut, and the hand hole plate, by being turned, may be readily removed from the hand hole 2 without entirely reoving the nut:15- i his combination of arts is. particularly desirable andseryiceabl since prior to my invention .0 combining these elements and formin the .hand hole in .th manner particular y set forth, the .iormation. and coupling of hand hole plates and thei r securing means, was, extremely tedious and pensi and furthermore they were net eficient in operation. h a

41m F'g'. 6, th elemeetsz-n ve described are. identical. withthe exception that theofiset angular hole 21. is hexagonal in. shape. as s also the 11 322. Otherth n. these-diflerences, the parts are assem led and; con,- Fl sdin ill i im e bsdi are e o e- @E rth mere y ma th ha d. 11018 Plat f wroughtst l. n a i the m for i teg fll andoineleding. the clamp.- ing plate n om nation withthe specifically formed plate and. hole, itds pract cally .impossible for any of t ve rs tojr lfture .i iheqene 9 god een-s eing {be d 1 oh. t e hhchi egshrface oftlie l plat e k en ds 'directly into intersecting engagement with the outer sur- 'face of the plated; ith this construction a slight resiliency is formed in said elarnping plate to insure a positive clamping of metal is secure adjacent the curved opening than i fv thesidesof the square .Opening were arranged. parallel. and at; right angles to a line passing through thelcenter of the clamp ing plate. The additional metal thus secured forms a positive hearing for the nut and the corners of the off-set opening are sufficiently rounded so as to prevent shear.

In some instances in making the hand hole 2 as illustrated inFig. 3, I first make the large hole 5 either by punching it slightly smaller than thedesired hole and afterward reaming it to full size, or by boringthis hole out to the full size and afterward forming the smaller recesses 7 and 8 by means of align l a 1 ,Furthermore, it will be noted that, the circular lips 11, which fit within the recesses 7 and 8, keep the. hand-holeplates from turning when the nut, is being-tight ened and thus prevents the tearing of the gaskets. l 1 It will be further noted that pthe nut 15 is recessed both on its inner andoutersurface. These recesses protect the threads in the nuts, and prevent the threads from becoming .up-set .or from cutting which would happeeifi the threads ;bore directly against the-convex surface of the plate 1.7. Furthermore, by having the nut lreeessed asshown at lfito conform to. the curvature of i the convex surface, of. the plate 1.1% adj azcent .the'center of the latter, the; construction is such as to compel theyoke Etc com'estm-a central position with respectto the nutiend the stem of the handhole plate'i- Eu While I. have described my invention as taking a .paliticulam for-m, it-will be undenstood thetithe various pertsof my invention may bechangedwithout departingyfmmthe spirit thereof, and; hence I fie mot-limit myselitmthe precise constellation set forth, but consider that I am at liberty to meke such changeszandaltcraitionsia s twirlycome withinthe scope cftheap endedielaims.-- K I Having thusdescr ed-myfinventiomwhat I claim as *new and desire. to secure: lb}: Iiet ters Patent is: fish. 1. Thecombinatien of a boiler: plate :hfavon flanged [portionforming. a covering fo the hole and engaging the inner surface of the plate adjacent the hole, an integral stem on said hand hole plate, a nut on said stem, a clamping plate having an off-set hole movable over said nut, said clamping plate also having a recess intersecting said hole and movable over said stem behind the nut, said hole having sides in slanting intersection with the recess to guide the stern directly into the latter, said clamping plate having a portion in en agement with the outer surface of the boi er plate and being engaged by the nut, substantially as described.

2. The combination of a boiler plate having a hand hole, a hand hole plate having a flanged portion forming a covering for the hole and engaging the inner surface of the plate adjacent the hole, a threaded stem on said hand hole plate, a nut on said stem,

Copies of this patent may be obtained for live cents each, by addrenlng the a clamping plate having an elf-set hole movable over said nut, said clamping plate also having an intersecting recess movable over said stem behind the nut, said clamping plate having a portion in engagement with the outer surface of gaged by the nut, said clamping plate having a convex outer surface, said nut having a recessed surface into which a portion of the convex outer surface of the clamping plate extends, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EDWARD C. MEIER.

Witnesses:

N. JOHN Nansen, RUssELL E. KEEN.

" commissioner of 2mm,

Wnhington, D. 0."

the plate and being en- 

